二氧化钛纳米棒/分子印迹光电化学传感器检测2,4-二氯苯酚

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英文篇名：Study on determination of 2,4-dichlorophenol based on molecularly imprinted photoelectrochemical sensor of TiO_2 nanorods 作者：陈东 ; 曹顺安 ; 杜富滢 ; 赵丹丹 ; 黄聪 ; 董重瑞 英文作者：CHEN Dong;CAO Shun-an;DU Fu-ying;ZHAO Dan-dan;Huang Cong;DONG Chong-rui;School of Power and Mechanical Engineering,Wuhan University; 关键词：二氧化钛纳米棒 ; 光电化学传感器 ; 分子印迹点 ; 2 ; 4-二氯苯酚 英文关键词：TiO2 nanorods;;Photoelectrochemical sensor;;Molecularly imprinted sites;;2,4-dichlorophenol 中文刊名：FXSY 英文刊名：Chinese Journal of Analysis Laboratory 机构：武汉大学动力与机械学院; 出版日期：2018-11-08 16:58 出版单位：分析试验室 年：2018 期：v.37 基金：湖北省自然科学基金项目(2015CFB412)资助 语种：中文; 页：FXSY201811004 页数：4 CN：11 ISSN：11-2017/TF 分类号：24-27

摘要

采用水热法一步合成了具有分子印迹点的二氧化钛纳米棒,构建了光电化学检测界面,并实现了对痕量2,4-二氯苯酚(2,4-DCP)的快速检测。结果表明,分子印迹点不仅可以选择性地识别2,4-DCP,而且可以显著提高检测的灵敏度。采用恒电位法在紫外光照射下对2,4-DCP进行检测,该光电化学传感器的线性工作范围为1. 2×10-12～5×10-9mol/L,检出限2×10-13mol/L(S/N=3)。该电极已应用于实际样品检测。
        TiO_2 nanorods with molecularly imprinted sites were synthesized by one step hydrothermal method and the selective and sensitive photoelectrochemical( PEC) sensing platform for the fast determination of trace 2,4-dichlorlphenol( 2,4-DCP) was established. Results showed that molecularly imprinted sites can not only selectively identify 2,4-DCP,but also significantly improve the detection sensitivity. 2,4-DCP was determined by PEC sensor using constant potential method under UV light irradiation. The linear working range and detection limit of PEC sensor were 1. 2 × 10-12-5 × 10-9 mol/L and 2 × 10-13 mol/L( S/N = 3),respectively. It was applied to the actual sample test,and the electrode showed a good detection effect,which builts a foundation for the practical application of photoelectric chemical sensor.

引文

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